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102 results on '"Zobaa, A.F."'

4. Handbook of Renewable Energy Technology & Systems

Author

Bansal, R.C., Bansal, R.C., Zobaa, A.F. (Eds), Bansal, R.C., Bansal, R.C., and Zobaa, A.F. (Eds)

Abstract

Worldwide, the effects of global warming, pollution due to power generation from fossil fuels, and its depletion have led to the rapid deployment of renewable energy-based power generation. The leading renewable technologies are wind and photovoltaic (PV) systems. The incorporation of this generation of technologies has led to the development of a broad array of new methods and tools to integrate renewable generation into power system networks. The Handbook of Renewable Energy Technology & Systems comprises 22 chapters, arranged into four sections, which present a comprehensive analysis of various renewable energy-based distributed generation (DG) technologies. Aspects of renewable energy covered include wind and photovoltaic power systems and technology, micro-grids, power electronic applications, power quality, and the protection of renewable distributed generation.

Published
2021

5. Capacitive compensation at nonsinsoidal buses based on IEEE Std. 18-1992

Author

Zobaa, A.F.

Subjects
Electric power transmission -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

This letter presents a proposed method for finding the optimum fixed compensating capacitor to minimize the voltage harmonic distortion at a load bus while holding the power factor at a desired value and constraining the nameplate kilovar of the compensating capacitor, its rated voltage rms, and its rated current rms as constraints according to IEEE Std. 18-1992. Also, the values of the compensating capacitor, which would create resonant conditions, would be omitted from the solution. Finally, the contribution of the newly developed method is demonstrated in an example taken from previous publications. Index Terms--Harmonics, power factor, power quality.

Published
2003

6. An economic robust programing approach for the design of energy management systems

Author

Valencia Arroyave, F., Marquez-Ruiz, A., Zobaa, A.F., Abdel Aleem, S.H., Control Systems, and Smart Process Operations and Control Lab

Subjects
Test bench, Mathematical optimization, Wind power, Optimization problem, business.industry, Energy management, Process (engineering), Computer science, Range (statistics), Benchmark (computing), Microgrid, business, Water resource management
Abstract

Energy management systems have a key role in the operation of microgrid applications. Due to their importance, several approaches have been reported in the specialized literature. In this chapter, a novel formulation for robust optimizationbased EMS for microgrid applications. The novelty recast in the introduction of transmission constraints and in the avoidance of the use of prediction models for the uncertain variables. In this formulation, a time-variant uncertainty set is used to include the uncertainty in the optimization process. Unlike in the approaches reported in the specialized literature, the sets are previously defined based on the empirical statistics of historical data available. Thus, at each sampling time, the boundaries for the uncertain variables are obtained without using a prediction model. This reduces the complexity of the EMS making possible to compute the solution of the associated optimization problem in the range of the seconds. A modified version of the IEEE 9-bus system benchmark was used as test bench. In the modified version, the hydraulic generation unit (the largest unit in the system) was changed by an equivalent wind power station. The EMS was in charge of assigning the real power and the voltage level of the remaining two generation units.

Published
2017
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10. Power factor and your electrical utility bill in Egypt

Author

Aziz, M.M. Abdel, El-Zahab, E.E. Abou, and Zobaa, A.F.

Subjects
Electric power -- Prices and rates, Company pricing policy, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Beside being a good neighbor and not causing harmonic voltage for others that are connected to your electrical distribution circuit, complying with the legal requirements of IEEE standards 519, and maintaining safe and economical operating environments for electrical equipment within your physical load, there is another very good reason to maintain a good power factor: saving money on your electrical utility bill. This letter discusses the topic. Index Terms--Economics, harmonics, power factor.

Published
2003

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